diff --git a/engine/main.cpp b/engine/main.cpp
index 5f19129..1618dec 100644
--- a/engine/main.cpp
+++ b/engine/main.cpp
@@ -195,17 +195,17 @@ static CVReturn MyDisplayLinkCallback(CVDisplayLinkRef displayLink, const CVTime
 - (void)mouseDown:(NSEvent *)theEvent
 {
     auto mouseLoc = [self convertPoint:[theEvent locationInWindow] fromView:nil];
-    App::I.mouse_down(0, mouseLoc.x, mouseLoc.y);
+    App::I.mouse_down(0, mouseLoc.x, App::I.height - mouseLoc.y - 1);
 }
 - (void)mouseUp:(NSEvent *)theEvent
 {
     auto mouseLoc = [self convertPoint:[theEvent locationInWindow] fromView:nil];
-    App::I.mouse_up(0, mouseLoc.x, mouseLoc.y);
+    App::I.mouse_up(0, mouseLoc.x, App::I.height - mouseLoc.y - 1);
 }
 - (void)mouseMoved:(NSEvent *)theEvent
 {
     auto mouseLoc = [self convertPoint:[theEvent locationInWindow] fromView:nil];
-    App::I.mouse_move(mouseLoc.x, mouseLoc.y);
+    App::I.mouse_move(mouseLoc.x, App::I.height - mouseLoc.y - 1);
 }
 @end
 
@@ -261,6 +261,8 @@ static CVReturn MyDisplayLinkCallback(CVDisplayLinkRef displayLink, const CVTime
     [window center];
     [window makeKeyAndOrderFront:controller];
     [window setContentView:view];
+    [window setAcceptsMouseMovedEvents:true];
+    [window makeFirstResponder:view];
 
     controller = [[Controller alloc] initWithWindow:window];